Maurice Robinson, 25, has pleaded guilty to manslaughter after 39 bodies were discovered in the back of a refrigerated truck last October.
Sixteen of the 39 bodies of Vietnamese nationals who died while being transported to the UK have been returned home.
Maurice Robinson, 25, has pleaded guilty to plotting to assist illegal immigration after 39 bodies were found in a trailer in Essex.
Ten teenagers were among the 39 people found dead in the back of a refrigerated lorry in Essex.
The 39 people found dead in the back of a lorry in Essex have all been identified and their families told, Essex Police said.
Fifteen people - all believed to be men aged between 16 and 30 - have been arrested on suspicion of immigration offences.
The arrests were made by Vietnamese police in connection with the 39 migrants found dead in a lorry in Essex.
A lorry driver accused of the manslaughter of 39 migrants was part of a “global ring” that smuggled people into the UK, a court has heard.
The pair from Warrington, Cheshire, have been arrested on suspicion of manslaughter and conspiracy to traffic people.
Ex-superintendent Leroy Logan said tackling the "tidal wave" of people risking their lives to enter the UK is "not just a policing issue".
An HGV driver said he was "shocked but not surprised" at the discovery of a lorry in Essex containing 39 dead bodies.
The 39 individuals found dead in the back of a lorry in Essex were all Chinese nationals, it has emerged.
A 25-year-old man, named in reports as Mo Robinson from Co Armagh, Northern Ireland, remains in custody after 39 bodies were discovered.
A trailer carrying 39 people who were found dead had travelled from Zeebrugge into Purfleet, Essex, and docked in the Thurrock area.
News of the discovery of 39 dead bodies in a lorry in Thurrock, Essex, this morning has dominated Prime Minister's Questions.
Essex police have said 39 people have been pronounced dead with "early indications" suggesting 38 are adults and one is aged in their teens.